Improvement in hand-drills



Patented May 7, 1878.

BELLAMY.- Hand-Drill.

INVENTOR. mm mmm.

UNITED'STATES PATENT OFFICE.

CHARLES L. BELLAMY, OF ARLINGTON, NEW JERSEY.

IMPROVEMENT l N HAND-DRI LLS.

Specifcation forming part of Letters Patent No. 203, 102, dated May 7, 1878; application filed March 23, 1878.

To all whom it may concem:

Be it known that I, CHARLES L. BELLAMY, of Arlington, in the county of Hudson and State of New Jersey, have invented a new and valuable Improvement in Hand-Drills; and I do hereby deolare that the following is a full, clear, and exact description of the construction and operation of the same, reference' being had to the annexed drawing, making a part of this specification, and to the letters and figures of reference marked thereon.

` The drawing is a representation of a longitudinal central section of my hand-drill.

This invention has relation to improvements in hand-drills.

The object of the invention is to impart a continuous rotation in one direction to the drill-head, so that better effects may be produced.

The nature of the invention consists in combining, with a fly-wheel carrying the drill and rotating upon a suitable handle, a clutch mechanism and a drum rotatin g on said handle, and a spring secured at one end to the said clutch and at the other to the said handle, whereby the return motion of the clutch is had without arrestim g the drill, and a continuous motion thereof obtained, as will be hereinafter more fully set forth.

In the annexed drawing, the letter A designates a, metallic wheel, having upon one side an edge flange, a, and on the other acentral projecting socket, a', into which the drilltool B is fitted in the usual manner. C represents a handle, from which projects ametallic shaft, C', adapted to be received in the hub of the fly-wheel, and secured thereto .by means of a bolt, o, extending through the socket a' and engaging an annular groove on the shaft C', or by other equivalent means.

The wheel A rotates freely upon the shaft 0', but is held against lateral displacement by the bolt c aforesaid. Upon the shaft G are arranged, in the following order, so as to revolve freely thereon, the metallic barrel D, the clutch device E, and a drum, F, all rigidly connected or formed together as I may prefer.

The clutch consists of a T-arm, d, extending from the drum radially to the edge flange a of the fly-wheel, having a curved perimeter and a recess with an inclined bottom, e, upon its inner face. In this recess, between the edge flange a, and the inclined bottom e, is placed a roller, f, that is jammed between the head and flange when the drum is turned to` the right, thereby rotatng the fiy-wh eel, but immediately lets go, allowing the wheel to continue its motion when the motion of the drum is reversed by the reaction of a coil or other spring, S. This latteris placed in the barrel D, and is rigidly secured thereto at one end, and at the other to the shaft C Rotary motion is imparted tothe clutch by means of a cord, J, secured thereto and wound around it a suflicient number of times., which is vigorously unwound by drawing upon it with the right hand. During the rotation of the drum, spring-barrel, and clutch the spring S is wound up, and its reaotion reverses the 'clutch at the moment the cord is slackened, at

the same time rewindng the said cord without arresting the fly-wheel and drill.

The barrel is held up to the fly-wheel by means of a bolt, z', eXtendin g through .the drum and engagin g an annular groove in the shaft C' aforesa id.

What I claim as new, and desire to secure by Letters Patent, is

In combination with the shaft C', the flywheel A, provided with a socket for the tool,

and having a flange, a, at its perimeter, and

the rotating drum F and its arm d, provided with a roller, f, adapted to jam against the flange a, whereby the fly-wheel is' rotated by the motion imparted to the drum, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

CHARLES L. BELLAMY. 

